AN983B-BG-T-V8 Infineon Technologies, AN983B-BG-T-V8 Datasheet - Page 24

• Manufacturer Part Number: AN983B-BG-T-V8
• Description: IC PCI TO ETHERNET LAN 128-PQFP
• Manufacturer: Infineon Technologies

Specifications of AN983B-BG-T-V8

• Applications: Ethernet Controller
• Interface: USB
• Voltage - Supply: 3 V ~ 3.6 V
• Package / Case: 128-BFQFP
• Mounting Type: Surface Mount
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: AN983BBGTV8; SP000074652

Figure 10
7.3.3
Figure 11
7.4
The following figure shows the difference of timing without early interrupt and with early interrupt.
Data Sheet
Driver return buffer to upper layer
place the 1st packet data into host memory
Transmit data from FIFO to Media
Normal Interrupt after Transmit
Completed
Driver return buffer to upper layer
Early Interrupt after Host to TX-
FIFO Operation Completed
Host to TX-FIFO Memory
Operation
FIFO-to-host memory operation (1st packet)
place the 2nd packet data into host memory
FIFO-to-host memory operation (2nd packet)
place the 3rd packet data into host memory
FIFO-to-host memory operation (3rd packet)
Transmit Data Flow of Pre-fetch Data
Transmit Early interrupt Scheme
Transmit Normal Interrupt and Early Interrupt Comparison
Receive Scheme and Receive Early Interrupt Scheme
issue transmit demand
check point
check point
Transmit enable
time
handled by driver
time
handled by driver
transmit threshold
24
1st packet
check the next
packet
handled by AN983B
IFG
The saved time when transmit
early interrupt is implemented
1st packet is
transmitted, check
the 3rd packet
handled by AN983B
2nd packet
Functional Descriptions
Rev. 1.81, 2005-12-15
AN983B/BX